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September Weather in Llanddeusant, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Llanddeusant, United Kingdom hovers around 13°C (55°F), making it a pleasant time to explore. However, be prepared for a range in temperature, with minimums of 1°C (33°F) and maximums reaching 27°C (81°F). Expect 105 mm (4.1 in) of precipitation spread over about 15 days, accompanied by an average humidity level of 79%.

September Temperature in Llanddeusant

In September in Llanddeusant, the average temperature is 13°C (55°F). Maximums can reach 27°C (81°F) and minimums can drop as low as 1°C (33°F). Pack accordingly for varied weather when traveling during this time!

September Weather in Llanddeusant: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Llanddeusant, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Llanddeusant, September typically has an average temperature of 13°C (55°F), with highs reaching up to 27°C (81°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec394142465157605955504442
Data source: Temperature data for Llanddeusant generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Llanddeusant

In Llanddeusant in September, the total precipitation amount is 105 mm (4.1 in) over a span of 15 days.

September Precipitation Trends in Llanddeusant

The chart displays monthly precipitation patterns in Llanddeusant, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Llanddeusant, September typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec9614613268106105105132105156128160
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Llanddeusant

In Llanddeusant in September humidity is 79%. With an average temperature of 13°C (55°F), this humidity feels like a damp chill that permeates clothing, making outdoor activities slightly uncomfortable and prompting travelers to seek shelter or dress in layers to stay warm while adjusting to the moist air.

September Average Humidity in Llanddeusant

This chart illustrates the average monthly humidity levels in Llanddeusant, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Llanddeusant is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%84%80%80%70%73%79%89%90%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Llanddeusant

In Llanddeusant in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Llanddeusant, you can refer to this Hourly UV Index in Llanddeusant.

Maximum UV Index Levels in Llanddeusant for September

The chart shows the monthly maximum UV Index (UVI) for Llanddeusant in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Llanddeusant typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124678876421
Data source: Llanddeusant September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Llanddeusant Compares to Other Months

Weather in Llanddeusant varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Llanddeusant, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Llanddeusant, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)95 mm (3.8 inches)88%low
February Weather5°C (41°F)146 mm (5.7 inches)88%low
March Weather6°C (43°F)132 mm (5.2 inches)86%moderate
April Weather8°C (47°F)68 mm (2.7 inches)84%high
May Weather11°C (51°F)106 mm (4.2 inches)80%high
June Weather14°C (57°F)105 mm (4.1 inches)80%very high
July Weather16°C (60°F)105 mm (4.1 inches)70%very high
August Weather15°C (59°F)132 mm (5.2 inches)73%high
September Weather13°C (55°F)105 mm (4.1 inches)79%high
October Weather10°C (50°F)156 mm (6.1 inches)89%moderate
November Weather7°C (44°F)128 mm (5.1 inches)90%low
December Weather5°C (42°F)160 mm (6.3 inches)89%low

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